Box-cover fastener.



C. A. LAUZON.

BOX COVER FASTBNEE.

APPLIGATION FILED AUG. 24, 1909.

atented une 2l, 1916.

v. 52521. Fix

whre/aseo `CALVIN A. LAUzoN, or GRAND RAPIDS, MICHIGAN.

BOX-COVER FASTENER.

Application filed August 24, 1909.

ers, of which the following is a specification.

This invention relates to improvements in box cover fasteners.

My improved fastener or latch is especially designed by me for use ontireless cookers where a clamping action in securing the cover isdesirable in order to secure as per- 'fect a joint as possible althoughit is desirable and adapted for use in other relations where a clampinglatch or fastener 1s de- Vsired.

The main objects of this invention are to provide an improved fasteneror latch which is effective in clamping and securing the parts to whichit is applied together, and one which may be mainly formed of sheetmetal stampings.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The structure described constitutes one effective embodiment of myinvention. Other embodiments would be readily devised by those skilledin the art. Y

The invention is clearly dened and pointed out in the claims.

A structure constituting an effective and preferred embodiment of thefeatures 0f my invention is clearly illustrated in the accompanyingdrawing, .forming a part of this specification, in which,

Figure 1 is a side elevation of a structure embodying the features of myinvention, the body and the cover of the structure to which my improvedlatch is applied being shown in conventional form, the fastener beingshown engaged. Fig, 2 is a similar view of the latch or fastenerdisengaged. Fig. 3 is a detail vertical section taken on a linecorresponding to the broken line 3-3 of Fig. 1. Fig. t is a detailsection taken on a line corres onding to line 4-4 of Fig. 1. Fig. 5 is aetail side elevation of a modified structure. Fig. 6 is a detail sectiontaken on a line corresponding to the broken line 6 6 of Fig. 5.

In the drawings, similar reference char- Specicaton of Letters Patent.

Patented June 21, 1910.

serial No. 514.347.

acters refer to similar parts throughout the several views, and thesectional views are taken looking in the direction of the little arrowsatthe ends of the section lines.

Referring to the drawing', l represents the body and 2 the cover of afireless cooker or like receptacle, the same being shown in conventionalform only.

My improved latch or fastener consist-s of a supporting plate 3 on whichthe lever-like finger piece 4 is secured by means of the pivot 5. Thelinger piece is preferably provided with an out-turned portion 6 forconvenience in grasping. The keeper 7, is preferably in the form of anangle plate to engage the edge of the cover, the plate being secured tothe cover by means of the screws S arranged through the horizontal partsthereof. The plate 3 is secured to the body 1 by means of the screws 9.The engaging member 10 of the latch is mounted by means of the pivot 11.The member 10 is hook-like to engage the projecting stud-like member 12of the keeper. The plate 3 is provided with a stop 13 against which thelinger piece 4. is

swung when the latch is engaged. This stop posed relative to each otherthat the pivot for the keeper engaging member 1s swung past the centerof the keeper and the finger piece pivot in engaging the latch so that aclamping action is had on the keeper drawing the cover down andretaining it until the finger piece is again swung to carry the pivot 11past the center line to the pivot 5 and the keeper stud as stated. Theengaging member 10 is preferably provided with a projecting finger piece14.

The supporting plate 3, the linger piece 4, the keeper plate, and theengaging member 10 are all preferably formed of sheet metal stampings aswhen thus formed they are economical to produce and the structure isvery compact.

My improved fastener is very easy to engage on account of thetoggle-like eect or action secured by thus arranging the parts and, asstated, when the parts are in their engaging position With the fingerpiece against its stop they are secured in that position as any pull orstrain on the cover merely tends to draw the linger piece more firmlyagainst its stop, thus the latch not only serves as a clamp but as alocking latch which is quite unlikely to be accidentally disengaged orfreed.

As previously remarked my improved latch is very economical to produceand is at the same time, very strong and convenient to manipulate.

In the modified structure shown in Figs.-

5 and 6, the keeper 15 is in the form of a screw and the engaging memberof the latch is slightly modified in form. This structure is somewhatmore economical to produce than that shown in Figs. 1 to 4.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

l. In a fastening device, the combination with a keeper, of an attachingplate; a leverlike finger piece pivotally mounted on said plate; ahook-like keeper engaging member pivotally mounted on said finger piece;said finger piece and keeper engaging member being arranged to swing inplanes substantially parallel with the face of the said plate; and astop on said plate for said finger piece, said stop and keeper and thepivots for said finger piece and keeper engaging member being sodisposed relative to each other that the pivot for said keeper engagingmember is swung pastthe center of said keeper andA the finger piecepivot, whereby a clamping movement is applied to the keeper engagingmember and the parts retained in position when the finger piece is swungagainst said sto 2E.) In a fastening device, the combination with akeeper, of an attaching plate; a leverlike finger piece pivotallymounted on said plate; a hook-like keeper engaging member pivotallymounted on said finger piece, said finger piece and keeper engagingmember being arranged to swing inplanes substantially parallel with theface of the said plate; said hook-like keeper engaging member beingprovided with a laterally projecting finger piece; and a stop on saidplate for said finger piece, said stop being also adapted to serve as arest for said engaging member.

3. In a fastening device, the combination with a keeper, of an attachingplate; a leverlike finger piece pivotally mounted on said plate; ahook-like keeper engaging member pivotally mounted on said finger piece,said finger piece and keeper engaging member being arranged to swing inplanes substantially parallel with the face -of the said plate; saidhook-like keeper engaging member being provided with a laterallyproject-- ing finger piece; and a stop on said plate for said fingerpiece.

4. In a structure of the class described, the combination with a bodyand a cover, of a keeper consisting of an angled body portion arrangedto engage over the edge of the cover and having a projecting stud-likeengaging member thereon; an attaching plate secured to said body; alever-like finger piece pivotally mounted on said plate; and a hooklikekeeper engaging member pivotally mounted on said finger piece the pivotsfor said finger piece and keeper engaging member being so disposedrelative to each Qther that the pivot for said keeper engaging member isswung past the center of the keeper and the nger piece pivot wherebyclamping movement is applied when the parts are swung to their engagingposition.

In witness whereof, I have hereunto set my hand and seal in the presenceof two witnesses.

CALVIN A. LAUZoN.` [as] `Witnesses:

PEARL M. WEIGHTMAN, L. S. WALLACE.

